Created
November 18, 2021 06:14
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perl segfault 2021/11/17
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| #!/usr/bin/perl -w | |
| # The -w is required to trigger the segfault | |
| # Copyright 2021/11/17 Robin H. Johnson <robbat2@gentoo.org> | |
| # Public domain | |
| my $v = undef; | |
| my $c = undef; | |
| my %x; | |
| $x{$v} = ''; | |
| $x{$v} .= ' '.$c; # crash |
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| $ perl testscript.pl | |
| Use of uninitialized value $v in hash element at testscript.pl line 8. | |
| Use of uninitialized value $v in hash element at testscript.pl line 9. | |
| Segmentation fault | |
| Summary of my perl5 (revision 5 version 34 subversion 0) configuration: | |
| Platform: | |
| osname=linux | |
| osvers=5.14.5-x86_64-00001-g24d365d50a37 | |
| archname=x86_64-linux | |
| uname='linux localhost 5.14.5-x86_64-00001-g24d365d50a37 #88 smp fri sep 17 22:30:09 pdt 2021 x86_64 amd ryzen 7 3700x 8-core processor authenticamd gnulinux ' | |
| config_args='-des -Dinstallprefix=/usr -Dinstallusrbinperl=n -Ui_xlocale -Di_ndbm -Di_gdbm -Di_db -DDEBUGGING=none -Dgentoolibdirs=/usr/lib64/perl5/5.32:/usr/lib64/perl5/vendor_perl/5.32:/usr/lib64/perl5/vendor_perl/5.30.0:/usr/lib64/perl5/vendor_perl/5.26.2:/usr/local/lib64/perl5/5.24.2:/usr/lib64/perl5/5.24.0:/usr/lib64/perl5/vendor_perl/5.24.0:/usr/lib64/perl5/vendor_perl/5.22.1:/usr/lib64/perl5/vendor_perl/5.20.1:/usr/lib64/perl5/vendor_perl/5.16.3:/usr/lib64/perl5/vendor_perl/5.16.1:/usr/lib64/perl5/vendor_perl/5.16.0:/usr/lib64/perl5/5.12.4:/usr/lib64/perl5/vendor_perl/5.12.4:/usr/lib64/perl5/5.12.3:/usr/lib64/perl5/vendor_perl/5.12.3:/usr/lib64/perl5/5.12.2:/usr/lib64/perl5/vendor_perl/5.12.2:/usr/lib64/perl5/5.8.8:/usr/lib64/perl5/vendor_perl/5.8.8: -Dlibpth=/usr/local/lib64 /lib64 /usr/lib64 -Dnoextensions=ODBM_File -Duseshrplib -Darchname=x86_64-linux -Dcc=x86_64-pc-linux-gnu-gcc -Dar=x86_64-pc-linux-gnu-ar -Dnm=x86_64-pc-linux-gnu-nm -Dcpp=x86_64-pc-linux-gnu-gcc -E -Dranlib=x86_64-pc-linux-gnu-ranlib -Dccflags=-march=native -O2 -pipe -Doptimize=-march=native -O2 -pipe -Dldflags=-Wl,-O1 -Wl,--as-needed -Wl,--defsym=__gentoo_check_ldflags__=0 -Dprefix=/usr -Dsiteprefix=/usr/local -Dvendorprefix=/usr -Dscriptdir=/usr/bin -Dprivlib=/usr/lib64/perl5/5.34 -Darchlib=/usr/lib64/perl5/5.34/x86_64-linux -Dsitelib=/usr/local/lib64/perl5/5.34 -Dsitearch=/usr/local/lib64/perl5/5.34/x86_64-linux -Dvendorlib=/usr/lib64/perl5/vendor_perl/5.34 -Dvendorarch=/usr/lib64/perl5/vendor_perl/5.34/x86_64-linux -Dman1dir=/usr/share/man/man1 -Dman3dir=/usr/share/man/man3 -Dsiteman1dir=/usr/local/man/man1 -Dsiteman3dir=/usr/local/man/man3 -Dvendorman1dir=/usr/share/man/man1 -Dvendorman3dir=/usr/share/man/man3 -Dman1ext=1 -Dman3ext=3pm -Dlibperl=libperl.so.5.34.0 -Dlocincpth=/usr/include -Dglibpth=/lib64 /usr/lib64 -Duselargefiles -Dd_semctl_semun -Dcf_by=Gentoo -Dmyhostname=localhost -Dperladmin=root@localhost -Ud_csh -Dsh=/bin/sh -Dtargetsh=/bin/sh -Uusenm' | |
| hint=recommended | |
| useposix=true | |
| d_sigaction=define | |
| useithreads=undef | |
| usemultiplicity=undef | |
| use64bitint=define | |
| use64bitall=define | |
| uselongdouble=undef | |
| usemymalloc=n | |
| default_inc_excludes_dot=define | |
| Compiler: | |
| cc='x86_64-pc-linux-gnu-gcc' | |
| ccflags ='-march=native -O2 -pipe -fwrapv -fno-strict-aliasing -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64' | |
| optimize='-march=native -O2 -pipe' | |
| cppflags='-march=native -O2 -pipe -fwrapv -fno-strict-aliasing' | |
| ccversion='' | |
| gccversion='11.2.0' | |
| gccosandvers='' | |
| intsize=4 | |
| longsize=8 | |
| ptrsize=8 | |
| doublesize=8 | |
| byteorder=12345678 | |
| doublekind=3 | |
| d_longlong=define | |
| longlongsize=8 | |
| d_longdbl=define | |
| longdblsize=16 | |
| longdblkind=3 | |
| ivtype='long' | |
| ivsize=8 | |
| nvtype='double' | |
| nvsize=8 | |
| Off_t='off_t' | |
| lseeksize=8 | |
| alignbytes=8 | |
| prototype=define | |
| Linker and Libraries: | |
| ld='x86_64-pc-linux-gnu-gcc' | |
| ldflags ='-Wl,-O1 -Wl,--as-needed -Wl,--defsym=__gentoo_check_ldflags__=0' | |
| libpth=/usr/local/lib64 /lib64 /usr/lib64 | |
| libs=-lgdbm -ldb -ldl -lm -lcrypt -lutil -lc -lgdbm_compat | |
| perllibs=-ldl -lm -lcrypt -lutil -lc | |
| libc=libc-2.33.so | |
| so=so | |
| useshrplib=true | |
| libperl=libperl.so.5.34.0 | |
| gnulibc_version='2.33' | |
| Dynamic Linking: | |
| dlsrc=dl_dlopen.xs | |
| dlext=so | |
| d_dlsymun=undef | |
| ccdlflags='-Wl,-E' | |
| cccdlflags='-fPIC' | |
| lddlflags='-shared -march=native -O2 -pipe -Wl,-O1 -Wl,--as-needed -Wl,--defsym=__gentoo_check_ldflags__=0' | |
| Characteristics of this binary (from libperl): | |
| Compile-time options: | |
| HAS_TIMES | |
| PERLIO_LAYERS | |
| PERL_COPY_ON_WRITE | |
| PERL_DONT_CREATE_GVSV | |
| PERL_MALLOC_WRAP | |
| PERL_OP_PARENT | |
| PERL_PRESERVE_IVUV | |
| USE_64_BIT_ALL | |
| USE_64_BIT_INT | |
| USE_LARGE_FILES | |
| USE_LOCALE | |
| USE_LOCALE_COLLATE | |
| USE_LOCALE_CTYPE | |
| USE_LOCALE_NUMERIC | |
| USE_LOCALE_TIME | |
| USE_PERLIO | |
| USE_PERL_ATOF | |
| Locally applied patches: | |
| 0001-Fix-hpux-hints.patch | |
| - Fix hpux hints | |
| 0002-aix-gcc-detection-and-shared-library-soname-support.patch | |
| - aix gcc detection and shared library soname support | |
| 0003-cpan-ExtUtils-MakeMaker-drop-PORTAGE_TMPDIR-from-LD_.patch | |
| - cpan/ExtUtils-MakeMaker: drop $PORTAGE_TMPDIR from LD_RUN_PATH | |
| - Bug: https://bugs.gentoo.org/105054 | |
| 0004-Remove-rpath-and-append-LDFLAGS-to-lddlflags.patch | |
| - Remove -rpath and append LDFLAGS to lddlflags | |
| 0005-Add-headers-for-opensolaris.patch | |
| - Add headers for opensolaris | |
| 0006-List-packaged-patches-in-patchlevel.h.patch | |
| - List packaged patches for perl-5.34.0-r5(perl-5.34.0-patches-1) in patchlevel.h | |
| - Bug: https://bugs.debian.org/567489 | |
| 0007-Cleanup-PATH-and-shrpenv.patch | |
| - Cleanup PATH and shrpenv | |
| 0008-Tweak-enc2xs-to-follow-symlinks-and-ignore-missing-I.patch | |
| - Tweak enc2xs to follow symlinks and ignore missing @INC directories. | |
| - Bug: https://bugs.debian.org/290336 | |
| 0009-darwin-Use-CC-to-link.patch | |
| - darwin: Use $CC to link | |
| - Bug: https://bugs.gentoo.org/297751 | |
| 0010-Provide-a-sensible-INSTALLDIRS-default-for-modules-i.patch | |
| - Provide a sensible INSTALLDIRS default for modules installed from CPAN. | |
| 0011-Fix-interix-hints.patch | |
| - Fix interix hints | |
| 0012-Set-libperl-soname.patch | |
| - Set libperl soname | |
| - Bug: https://bugs.gentoo.org/286840 | |
| 0013-Add-etc-perl-to-INC.patch | |
| - Add /etc/perl to @INC | |
| 0014-cpan-ExtUtils-MakeMaker-remove-targets-that-generate.patch | |
| - cpan/ExtUtils-MakeMaker: remove targets that generate perllocal.pod | |
| 0015-Don-t-force-fstack-protector-on-everyone.patch | |
| - Don't force -fstack-protector on everyone | |
| - Bug: https://bugs.gentoo.org/348557 | |
| 0016-Do-not-set-custom-CFLAGS-in-cpan-Digest-SHA.patch | |
| - Do not set custom CFLAGS in cpan/Digest-SHA | |
| - Bug: https://bugs.gentoo.org/506818 | |
| 0017-Configure-Don-t-include-sources-in-usr-local-for-com.patch | |
| - Configure: Don't include sources in /usr/local/ for compiling perl | |
| 0018-cpan-IO-Socket-IP-Disable-network-tests.patch | |
| - cpan/IO-Socket-IP: Disable network tests | |
| 0019-Fix-EUMM-podlocal-tests.patch | |
| - Fix EUMM podlocal tests | |
| 0020-Skip-auto-linking-nsl-and-cl.patch | |
| - Skip auto-linking nsl and cl | |
| - Bug: https://rt.perl.org/Public/Bug/Display.html?id=13148 | |
| 0021-Disable-porting-tests-which-create-fun-false-failure.patch | |
| - Disable porting tests which create fun false-failures all over travis | |
| 0022-Disable-PathTools-tests-which-fails-under-sandboxing.patch | |
| - Disable PathTools tests which fails under sandboxing | |
| - Bug: https://bugs.gentoo.org/645084 | |
| 0023-Fix-CPAN-FirstTime-defaults-with-nonexisting-site-di.patch | |
| - Fix CPAN::FirstTime defaults with nonexisting site dirs if a parent is writable | |
| - Bug: https://bugs.debian.org/688842 | |
| 0024-Pass-LD-settings-through-to-subdirectories.patch | |
| - Pass LD settings through to subdirectories | |
| - Bug: https://bugs.debian.org/758471 | |
| 0025-Memoize-Storable-respect-nstore-option-not-respected.patch | |
| - Memoize::Storable: respect 'nstore' option not respected | |
| - Bug: https://bugs.debian.org/587650 | |
| - Bug: https://rt.cpan.org/Public/Bug/Display.html?id=77790 | |
| 0026-Better-errors-for-man-pages-from-standard-input.patch | |
| - Better errors for man pages from standard input | |
| - Bug: https://bugs.debian.org/777405 | |
| 0027-Respect-umask-during-installation.patch | |
| - Respect umask during installation | |
| 0028-Document-that-CCFLAGS-should-include-Config-ccflags.patch | |
| - Document that CCFLAGS should include $Config{ccflags} | |
| - Bug: https://bugs.debian.org/628522 | |
| - Bug: https://rt.cpan.org/Public/Bug/Display.html?id=68613 | |
| 0029-Fix-parallel-building.patch | |
| - Fix parallel building | |
| 0030-Add-support-for-Dgentoolibdirs.patch | |
| - Add support for -Dgentoolibdirs | |
| 0101-Fix-build-with-gdb120.patch | |
| - Fix GDBM_File to compile with version 1.20 and earlier | |
| - Bug: https://bugs.gentoo.org/802945 | |
| Built under linux | |
| Compiled at Nov 8 2021 13:24:31 | |
| @INC: | |
| /etc/perl | |
| /usr/local/lib64/perl5/5.34/x86_64-linux | |
| /usr/local/lib64/perl5/5.34 | |
| /usr/lib64/perl5/vendor_perl/5.34/x86_64-linux | |
| /usr/lib64/perl5/vendor_perl/5.34 | |
| /usr/lib64/perl5/5.34/x86_64-linux | |
| /usr/lib64/perl5/5.34 | |
| /usr/lib64/perl5/5.32 | |
| /usr/lib64/perl5/vendor_perl/5.32 | |
| /usr/lib64/perl5/vendor_perl/5.30.0 | |
| /usr/lib64/perl5/vendor_perl/5.26.2 | |
| /usr/local/lib64/perl5/5.24.2 | |
| /usr/lib64/perl5/5.24.0 | |
| /usr/lib64/perl5/vendor_perl/5.24.0 | |
| /usr/lib64/perl5/vendor_perl/5.22.1 | |
| /usr/lib64/perl5/vendor_perl/5.20.1 | |
| /usr/lib64/perl5/vendor_perl/5.16.3 | |
| /usr/lib64/perl5/vendor_perl/5.16.1 | |
| /usr/lib64/perl5/vendor_perl/5.16.0 | |
| /usr/lib64/perl5/5.12.4 | |
| /usr/lib64/perl5/vendor_perl/5.12.4 | |
| /usr/lib64/perl5/5.12.3 | |
| /usr/lib64/perl5/vendor_perl/5.12.3 | |
| /usr/lib64/perl5/5.12.2 | |
| /usr/lib64/perl5/vendor_perl/5.12.2 | |
| /usr/lib64/perl5/5.8.8 | |
| /usr/lib64/perl5/vendor_perl/5.8.8 |
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